|It's a processor problem if you just installed Windows 95. The Hardware Virtualization, more than two cores and clock speed higher than 1 GHz all cause problems!|
If you just installed Windows 95, upgrade to at least Windows 98 SE which doesn't have the problem
However if you used Windows 95 and it just start displaying it, then it's a software problem.
Added hardware? Try it remove it.
And finally Windows 95 isn't supported and it's OLD. To get support upgrade to Windows 2000 and later